WO2010121554A1 - 小区休眠/唤醒的方法、载波功率的控制方法及装置 - Google Patents
小区休眠/唤醒的方法、载波功率的控制方法及装置 Download PDFInfo
- Publication number
- WO2010121554A1 WO2010121554A1 PCT/CN2010/072044 CN2010072044W WO2010121554A1 WO 2010121554 A1 WO2010121554 A1 WO 2010121554A1 CN 2010072044 W CN2010072044 W CN 2010072044W WO 2010121554 A1 WO2010121554 A1 WO 2010121554A1
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- WIPO (PCT)
- Prior art keywords
- cell
- base station
- needs
- sleep
- carrier
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
- H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present invention relates to the field of communications, and in particular to a method for sleeping/waking up a cell, a method and a device for controlling carrier power.
- BACKGROUND OF THE INVENTION At present, the telecommunications industry is gradually entering a stage of meager profit. While telecom operators are seeking to expand market share and increase revenues of business types, they are also paying more and more attention to energy-saving and other reductions.
- the base station as a major consumer of energy for operators, is the key to energy conservation. At the same time, ordinary people are paying more and more attention to the problem of electromagnetic radiation pollution of the base station under working conditions.
- SON Self Organizing Network
- LTE Long Access Evolution
- RAN Radio Access Network
- SON features include Self Configuring and Self Optimizing.
- the following SON represents a logical entity that implements the SON function, which can be implemented on a base station or in a network management system.
- the present invention has been made in view of the need in the related art to increase the cost of a base station by adding hardware devices, thereby causing a problem of high cost. Therefore, the main object of the present invention is to provide an improved cell sleep/wake scheme and carrier power.
- the control scheme to solve the above problems. In order to achieve the above object, according to an aspect of the present invention, a method of cell dormancy is provided.
- the method for the cell to sleep includes: the self-organizing network determines whether the cell of the base station needs to sleep, and when the judgment result is that the cell needs to sleep, the self-organizing network indicates the sleeping cell of the base station.
- the method further includes: the base station sleeping the cell by: the base station immediately turns off the transmit power of the cell; the base station gradually reduces the transmit power of the cell, and the user on the cell After migrating to other cells, the transmit power of the cell is turned off; the base station returns the processing result to the ad hoc network.
- the ad hoc network determines whether the cell of the base station needs to sleep according to at least one of the following: a load condition of the serving cell and the neighboring cell, a number of attempts of the soft handover, and a fixed time period.
- the self-organizing network determines whether the cell of the base station needs to sleep in a periodic manner or an event-triggered manner.
- a method of cell wake-up is also provided.
- the method for waking up a cell includes: determining, by the self-organizing network, whether the cell of the base station needs to wake up, and when the judgment result is that the cell needs to wake up, the self-organizing network instructs the base station to wake up the cell.
- the method further includes: the base station receiving the indication information from the ad hoc network, where The organization network returns the processing results.
- the ad hoc network determines whether the cell of the base station needs to wake up according to at least one of the following: a load condition of the serving cell and the neighboring cell, a number of attempts of the soft handover, and a fixed time period.
- the self-organizing network determines whether the cell of the base station needs to wake up in a periodic manner or an event-triggered manner.
- the base station restoring the cell to the working state includes the following manner: The base station restores the pilot channel power of the carrier of the cell to the working state value.
- the method for controlling the carrier power according to the present invention includes: determining whether the cell of the base station needs to sleep and/or wake up by the self-organizing network; when the judgment result is that the cell needs to sleep, the self-organizing network indicates the sleeping cell of the base station, so that the base station transmits the carrier of the cell The pilot channel power is reduced to zero or the carrier is turned off, so that the cell enters a power-saving state; when the judgment result is that the cell needs to wake up, the self-organizing network instructs the base station to wake up the cell, so that the base station restores the pilot channel power of the carrier of the cell to work.
- the status value causes the cell to exit the power saving state.
- the base station sleep cell comprises: the base station immediately turns off the transmit power of the cell.
- the base station sleep cell comprises: the base station gradually reduces the transmit power of the cell; after the user on the cell migrates to other 'j, the area, the transmit power of the cell is turned off.
- the base station wakes up the cell, where: the base station receives the indication information from the ad hoc network, where the indication information is used to indicate that the base station wakes up the cell; and the base station restores the pilot channel power of the carrier of the cell to the working state value.
- the ad hoc network determines whether the cell of the base station needs to sleep and/or wake up according to at least one of the following: a load condition of the serving cell and the neighboring cell, a number of attempts of the soft handover, and a fixed time period.
- determining whether the self-organizing network needs to sleep and/or wake up the cell of the base station comprises: determining, by the self-organizing network, whether the cell of the base station needs to sleep and/or wake up in a periodic manner.
- determining whether the self-organizing network needs to sleep and/or wake up the cell of the base station comprises: determining, by the organization network, whether the cell of the base station needs to sleep and/or wake up is triggered by an event triggering manner.
- a carrier power control device configured to control carrier power according to the present invention.
- the device for controlling carrier power according to the present invention includes: a determining module, configured to determine whether a cell of the base station needs to be dormant and/or awake; and a first indicating module, configured to: when the determining result of the determining module is that the cell needs to sleep Instructing the base station to sleep the cell, so that the base station reduces the pilot channel power of the carrier of the cell to zero or turns off the carrier, so that the cell enters a power-saving state; and the second indication module is configured to: when the judgment result of the determining module is that the cell needs to wake up The base station is instructed to wake up the cell, so that the base station restores the pilot channel power of the carrier of the cell to the working state value, so that the cell exits the energy-saving state.
- the method for determining whether the cell of the base station needs to sleep and/or wake up and instructing the base station to perform carrier power control by using the SON solves the problem that the related art needs to increase the hardware device to achieve energy saving of the base station, resulting in high cost.
- the problem achieves the effect of energy saving and environmental protection of the base station without changing the hardware, ensuring that the user does not drop the call during the process of entering the energy-saving sleep state, and ensures that the energy-saving state can be quickly entered or exited.
- FIG. 1 is a flowchart of a method for controlling carrier power according to an embodiment of the present invention
- FIG. 2 is a flowchart according to a first embodiment of the present invention
- FIG. 3 is a flowchart according to a second embodiment of the present invention
- 4 is a block diagram showing the structure of a carrier power control apparatus according to an embodiment of the present invention.
- the embodiments of the present invention use the SON to determine whether the cell of the base station needs to be dormant and/or wake up by using the SON to improve the cost of the base station.
- the SON indicates that the base station sleeps the cell, so that the base station reduces the pilot channel power of the carrier of the cell to zero or turns off the carrier, so that the cell enters the energy-saving state;
- the SON indicates the base station.
- the cell is awakened, so that the base station restores the pilot channel power of the carrier of the cell to the working state value, so that the cell exits the energy-saving state.
- a method of cell dormancy includes: determining, by the self-organizing network, whether the cell of the base station needs to sleep, and determining that the cell needs to sleep, the self-organizing network instructing the base station to sleep.
- the base station sleeps the cell in one of the following ways: the base station immediately turns off the transmit power of the cell; the base station gradually reduces the transmit power of the cell, and after the user on the cell migrates to other cells, turns off the transmit power of the cell;
- the organization network returns the processing results.
- the ad hoc network determines whether the cell of the base station needs to sleep according to at least one of the following: a load condition of the serving cell and the neighboring cell, a number of attempts of the soft handover, and a fixed time period.
- the self-organizing network determines whether the cell of the base station needs to sleep in a periodic manner or an event-triggered manner. According to an embodiment of the present invention, a method for waking up a cell is further provided.
- the method includes: determining, by the self-organizing network, whether the cell of the base station needs to wake up, and when the judgment result is that the cell needs to wake up, the ad hoc network instructs the base station to wake up the cell. . Then, the base station receives the indication information from the ad hoc network, where the indication information is used to indicate that the base station wakes up the cell; the base station restores the cell to the working state; and the base station returns the processing result to the ad hoc network.
- the ad hoc network determines whether the cell of the base station needs to wake up according to at least one of the following: a load condition of the serving cell and the neighboring cell, a number of attempts of the soft handover, and a fixed time period.
- the self-organizing network determines whether the cell of the base station needs to wake up in a periodic manner or an event-triggered manner.
- the base station restoring the cell to the working state includes the following manner: The base station restores the pilot channel power of the carrier of the cell to the working state value.
- FIG. 1 is a flowchart of a method for controlling carrier power according to an embodiment of the present invention. As shown in FIG.
- the method includes the following steps S102 to S106: Step S102, whether SON needs to sleep for a cell of a base station. / or wake up to judge.
- Step S104 When the judgment result is that the cell needs to sleep, the SON indicates that the base station sleeps the cell. Therefore, the base station reduces the pilot channel power of the carrier of the cell to zero or turns off the carrier, so that the cell enters a power-saving state, that is, the cell has two states: a normal state and an energy-saving sleep state.
- the base station In the first mode, the base station immediately turns off the transmit power of the cell, that is, immediately sleeps the cell; mode 2, the base station gradually reduces the transmit power of the cell, and after the user on the cell migrates to other cells, Turn off the transmit power of the cell, that is, the friendly dormant cell.
- the first method, immediately sleeping the cell specifically includes the following steps:
- the base station immediately turns off the transmit power of the cell.
- the second method, the friendly dormant cell specifically includes the following steps:
- SON indicates a base station friendly sleeping cell
- the base station gradually reduces the transmit power of the dormant cell, so that the users on the dormant cell are smoothly migrated to other cells, and the caller is not dropped (line), that is, the base station gradually reduces the pilot of the carrier of the cell to be dormant.
- the channel power, the user under the carrier will switch to other cells according to the existing mobility policy because the pilot signal is continuously reduced, and the new user accessing the cell will also be rejected;
- Step S106 When the judgment result is that the cell needs to wake up, the SON indicates that the base station wakes up the cell, so that the base station restores the pilot channel power of the carrier of the cell to the working state value, so that the cell exits the energy-saving state.
- the base station wakes up the cell, including: the base station receives the indication information from the SON, where the indication information is used to indicate that the base station wakes up the cell; and the base station restores the pilot channel power of the carrier of the cell to the working state value, which specifically includes the following steps: (1) SON indicates that the base station wakes up the cell;
- the base station wakes up the cell, that is, the base station restores the pilot channel power of the carrier of the cell to the working state value.
- the SON needs to sleep and/or wake up to the cell of the base station according to at least one of the following (ie, the basis of the decision algorithm on which the decision of the energy saving control can be based): the load condition of the serving cell and the neighboring cell, the number of attempts of the soft handover, Fixed time period.
- the SON may determine whether the cell of the base station needs to sleep and/or wake up in a periodic manner, or may use the event triggering manner to determine whether the cell of the base station needs to sleep and/or wake up, that is, the SON uses periodicity. Or event triggering mode for energy saving control decisions.
- the manner in which the event is triggered refers to the load condition of the serving cell and the neighboring cell, the number of attempts of the soft handover, and the like, and the periodic mode refers to a fixed time period. It should be noted that the above SON represents a logical entity that implements the SON function, and can be implemented on a base station or in a network management system.
- the 3GPP SON protocol is added to support the energy-saving and environmental protection requirements of the base station, and the base station energy-saving control can be implemented.
- the TDD and FDD systems can also be applied, and the following effects are achieved: the base station can be saved without changing the hardware. Environmental protection; Ensure that the base station quickly enters or exits the energy-saving state; ensures that the user does not drop the call (line) during the process of entering the energy-saving sleep state; the energy-saving control process of the base station does not cause the cell to be deleted or reconstructed.
- Embodiment 1 The SON in the second embodiment represents a logical entity that implements the SON function, and can be implemented on a base station (eNodeB) or in a network management system.
- the SON energy-saving control decision algorithm judges according to the time period, uses the energy-saving control instruction message (ENERGY SAVINGS INDICATION) to carry the energy-saving control instruction, and uses the energy-saving control response message (ENERGY SAVINGS RESPONSE) to indicate that the processing is successful.
- the process of using the energy-saving control failure message indicates that the process fails.
- FIG. 2 is a flowchart according to the first embodiment of the present invention. As shown in FIG.
- Step 201 The SON periodically performs energy-saving control judgment, and determines whether the eNodeB cell needs to sleep or wake up according to the time period decision method, for example, 22 per day: During the time period of 00 ⁇ 7:00, the cell enters the dormant state, and the other time period resumes working state; after the SON decision reaches the eNodeB cell dormancy condition, for example, the current time is 22: 00, SON sends ENERGY SAVINGS INDICATION indicates to the eNodeB cell that the eNodeB 'j, the area performs sleep energy saving processing.
- the time period decision method for example, 22 per day: During the time period of 00 ⁇ 7:00, the cell enters the dormant state, and the other time period resumes working state; after the SON decision reaches the eNodeB cell dormancy condition, for example, the current time is 22: 00, SON sends ENERGY SAVINGS INDICATION indicates to the eNo
- Step 202 After receiving the ENERGY SAVINGS INDICATION sent by the SON, the eNodeB gradually reduces the pilot power of the cell, and the user under the carrier of the cell will switch to other according to the existing mobility policy because the pilot signal is continuously reduced. The cell goes up to ensure that the user does not drop the call, and the new user who accesses the cell will also be rejected.
- Step 203 After the pilot power of the cell is reduced to a certain value, the eNodeB sleeps the cell after all the users of the cell are migrated to other cells (the pilot channel power of the carrier of the cell is reduced to 0 or turned off). Carrier).
- Step 204 If the sleep process of the eNodeB cell is successfully processed, return ENERGY SAVINGS RESPONSE; if the process fails, return ENERGY SAVINGS FAILURE.
- Step 205 The SON periodically performs the energy-saving control decision, and determines whether the eNodeB cell needs to sleep or wake up according to the time-stage decision method. For example, the cell enters the sleep state in the time period from 22:00 to 7:00 every day, and resumes the working state in other time periods.
- Step 206 After receiving the ENERGY SAVINGS INDICATION sent by the SON, the eNodeB wakes up the cell immediately. If the processing is successful, returns ENERGY SAVINGS RESPONSE; if the processing fails, returns ENERGY SAVINGS FAILURE.
- Embodiment 2 the SON energy-saving control decision algorithm judges according to the load condition of the serving cell and the neighboring area, the number of attempts of the soft handover, and uses the energy-saving control indication message (ENERGY SAVINGS INDICATION ) to carry the energy-saving control indication, and uses The energy-saving control response message (ENERGY SAVINGS RESPONSE) indicates that the processing is successful, and the energy-saving control failure message (ENERGY SAVINGS FAILURE) indicates that the processing has failed.
- FIG. 3 is a flowchart according to Embodiment 2 of the present invention. As shown in FIG. 3, the flow includes the following steps.
- Step 301 SON periodically performs energy saving control judgment, according to the load condition of the serving cell and the neighboring cell, The number of attempts of the soft handover determines whether the eNodeB cell needs to sleep or wake up, for example, when the load of the serving cell to be dormant is below a certain threshold and the load of the neighboring cell is not higher than a certain threshold.
- the serving cell enters a dormant state.
- the SON After the eNodeB determines that the cell sleep condition is reached, the SON sends an ENERGY SAVINGS INDICATION to the eNodeB cell to instruct the eNodeB cell to perform sleep energy saving processing. Step 302, the eNodeB connects to the ENERGY SAVINGS INDICATION sent by the SON, and gradually reduces the pilot power of the cell that needs to sleep.
- the user under the carrier of the cell will be moved according to the existing pilot signal because of the continuous decrease of the pilot signal.
- the policy is switched to other cells, so that the user does not drop the call (line), and the new user accessing the cell will also be rejected.
- Step 303 After the pilot power of the cell is reduced to a certain value, the eNodeB sleeps the cell after ensuring that all users of the cell migrate to other cells (the pilot channel power of the carrier of the cell is reduced to 0 or off). Broken carrier).
- Step 304 If the sleep process of the eNodeB cell is successfully processed, return ENERGY SAVINGS RESPONSE; if the word processing fails, return ENERGY SAVINGS FAILURE.
- Step 305 The SON periodically performs energy-saving control judgment. According to the load condition of the serving cell and the neighboring cell, the number of attempts of the soft handover determines whether the eNodeB cell needs to sleep or wake up.
- the dormant cell needs to wake up and recover; after the decision reaches the eNodeB cell wakeup condition, the SON sends an ENERGY SAVINGS INDICATION to the eNodeB cell, indicating that the eNodeB cell performs wakeup recovery. deal with.
- the eNodeB connects to the ENERGY SAVINGS INDICATION sent by the SON, and immediately wakes up the cell.
- FIG. 4 is a structural block diagram of a carrier power control device according to an embodiment of the present invention. As shown in FIG. 4, the device includes: a determining module 42, An indicating module 44 and a second indicating module 46 are described in detail below.
- the determining module 42 is configured to determine whether the cell of the base station needs to be dormant and/or awake.
- the first indication module 44 is connected to the determining module 42 for indicating the base station if the determining result of the determining module 42 is that the cell needs to sleep.
- the dormant cell so that the base station reduces the pilot channel power of the carrier of the cell to zero or turns off the carrier, so that the cell enters the energy-saving state;
- the second indication module 46 is connected to the determining module 42 for determining that the result of the determining module 42 is a cell.
- the base station is instructed to wake up the cell, so that the base station restores the pilot channel power of the carrier of the cell to the working state value, and the cell exits the power saving state.
- the base station There are two ways for the base station to sleep the cell: In the first mode, the base station immediately turns off the transmit power of the cell, that is, immediately sleeps the cell; mode 2, the base station gradually reduces the transmit power of the cell, and then the user on the cell migrates to other cells. Thereafter, the transmit power of the cell, that is, the friendly dormant cell, is turned off.
- the base station wakes up the cell, including: the base station receives the indication information from the SON, where the indication information is used to indicate that the base station wakes up the cell; and the base station restores the pilot channel power of the carrier of the cell to the working state value.
- the foregoing embodiment uses the SON periodic or event-triggered energy-saving control decision to perform base station energy-saving control (by sleeping, awakening certain carriers, etc.) to achieve the purpose of energy saving and environmental protection of the base station without changing the hardware. It achieves the effect of energy saving and environmental protection of the base station, and ensures that the user does not drop the call during the process of entering the energy-saving sleep state, and ensures that the process of entering or exiting the energy-saving state is rapid.
- the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
- the invention is not limited to any specific combination of hardware and software.
- the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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BRPI1006605-5A BRPI1006605B1 (pt) | 2009-04-23 | 2010-04-22 | método para ativar e desativar temporariamente a célula e método e aparelho para controlar a potencia da portadora |
JP2012506324A JP2012525025A (ja) | 2009-04-23 | 2010-04-22 | セル・スリープ/呼び覚まし方法、搬送波電力の制御方法及び装置 |
EP10766644.8A EP2424325A4 (en) | 2009-04-23 | 2010-04-22 | SLEEP / WAVE METHOD FOR CELLS, METHOD AND CONTROL DEVICE FOR CARRIER POWER |
US13/258,387 US8781517B2 (en) | 2009-04-23 | 2010-04-22 | Method for cell sleep/wakeup, method and apparatus for controlling carrier power |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN200910137213.8A CN101873677B (zh) | 2009-04-23 | 2009-04-23 | 载波功率的控制方法及装置 |
CN200910137213.8 | 2009-04-23 |
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WO2010121554A1 true WO2010121554A1 (zh) | 2010-10-28 |
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PCT/CN2010/072044 WO2010121554A1 (zh) | 2009-04-23 | 2010-04-22 | 小区休眠/唤醒的方法、载波功率的控制方法及装置 |
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US (1) | US8781517B2 (zh) |
EP (1) | EP2424325A4 (zh) |
JP (1) | JP2012525025A (zh) |
CN (1) | CN101873677B (zh) |
BR (1) | BRPI1006605B1 (zh) |
WO (1) | WO2010121554A1 (zh) |
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EP2424325A4 (en) | 2014-06-25 |
EP2424325A1 (en) | 2012-02-29 |
BRPI1006605B1 (pt) | 2021-05-11 |
CN101873677B (zh) | 2016-09-28 |
BRPI1006605A2 (pt) | 2016-04-19 |
US8781517B2 (en) | 2014-07-15 |
JP2012525025A (ja) | 2012-10-18 |
US20120028674A1 (en) | 2012-02-02 |
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